Doing asynchronous probing can lead to reordered network device names. And because udev doesn't have any useful information to construct a persistent name, this causes VM's to sporadically boot with reordered device names and no connectivity. This shows up on the Ubuntu image on larger VM's where 30% of the time eth0 and eth1 get swapped. Note: udev MAC address policy is disabled on Azure images because the netvsc and PCI VF will have the same mac address. Fixes: af0a5646cb8d ("use the new async probing feature for the hyperv drivers") Signed-off-by: Stephen Hemminger <sthemmin@xxxxxxxxxxxxx> --- drivers/net/hyperv/netvsc_drv.c | 3 --- 1 file changed, 3 deletions(-) diff --git a/drivers/net/hyperv/netvsc_drv.c b/drivers/net/hyperv/netvsc_drv.c index 06393b215102..1a2c32111106 100644 --- a/drivers/net/hyperv/netvsc_drv.c +++ b/drivers/net/hyperv/netvsc_drv.c @@ -2411,9 +2411,6 @@ static struct hv_driver netvsc_drv = { .id_table = id_table, .probe = netvsc_probe, .remove = netvsc_remove, - .driver = { - .probe_type = PROBE_PREFER_ASYNCHRONOUS, - }, }; /* -- 2.20.1